Home / 315,530.24-435,449.44-172,303.60

Finding the Fourth Proportional to 315,530.24, 435,449.44 and 172,303.60

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Solution

The fourth proportional to 315,530.24, 435,449.44 and 172,303.60 is: 237,788.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,530.24 : 435,449.44 = 172,303.60 : x
  2. Step 2: Convert to fraction form
    315,530.24/435,449.44 = 172,303.60/x
  3. Step 3: Cross multiply
    315,530.24x = 435,449.44 × 172,303.60
  4. Step 4: Simplify right side
    315,530.24x = 75,029,506,129.98
  5. Step 5: Solve for x
    x = 75,029,506,129.98/315,530.24
  6. Step 6: Final answer
    x = 237,788.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.